I am the DM8C paper shredder and shreddred lot of documents lately only putting 2 pieces of paper at a time. The green light is coming on but it is making a funny sound like something is jammed. I tried to unplug it and remove a lot of stuck paper in the blades but it still continues to make a funny sound and does not accept new papers for shredding. Is there anything I can do to fix this? Thank you Sarah